Featured Project
Ocean Park E-Commerce Ticketing Platform
Complete A-to-Z ticket purchase flow with Type Approval compliant payment monitoring and automated reconciliation.
Role
Platform & DevSecOps Engineer
Timeline
September 2025 - November 2025
Category
professional
99.9% success rate
TA compliant
Zero revenue loss
Overview
Built enterprise-grade e-commerce ticketing system for Ocean Park Hong Kong, integrating Octopus payment gateway and TAS (Ticketing Administration System). Implemented Type Approval (TA) compliant payment status polling meeting regulatory requirements by Octopus Cards Limited.
What I Built
- •Implemented TA-compliant payment status polling with smart termination logic
- •Built RESTful APIs with JWT authentication and Spring Security
- •Developed idempotent fulfillment logic preventing duplicate transactions
- •Created automated reconciliation job to prevent revenue loss
- •Integrated Octopus payment gateway with XML-based protocol
Key Achievements
- Type Approval compliant payment monitoring system
- 99.9% transaction success rate
- Zero revenue loss through automated reconciliation
- Real-time payment status updates every 10 seconds
Technologies Used
Java 17Spring BootSpring SecurityPostgreSQLJWTDockerJUnitMockito
Tags
E-commercePayment ProcessingEnterprise